Lewis & Short

2. Aethra, ae, f., = Αἴθρα.

  1. I. Daughter of Oceanus and Tethys, mother of Hyas (in Hyg. Fab. 192 called Pleione), Ov. F. 5, 171.
  2. II. Daughter of Piltheus and mother of Theseus, acc. to Ov. H. 10, 131, and Hyg. Fab. 37.